This may look odd that we are questioning our National Anthem. Translation of the first paragraph is given below:

Jana Gana Mana In English

Thou are the ruler of the minds of all people, dispenser of India's destiny.

The name rouses the hearts of Punjab, Sind, Gujurat and Maratha. Of the Dravid and Orissa and Bengal.

It Echoes in the hills of Vindhyas and Himalayas, mingles in the music of Yamuna and Ganga and is chanted by the waves of the Indian Sea.

They pray for your blessing and sing thy praise. The salvation of all peaople is thy hand, thou dispenser of India's destiny. Victory, Victory, Victory to thee.

States under Brtish rule are mentioned. There is no reference of Rajasthan, Kashmir, Kerala, Andhra, Kerala etc which were under State Rajas/Nawabs

Tagore stated the following in 1937:

"What Togore said:

On 10 November 1937 Tagore wrote a letter to Mr Pulin Bihari Sen about the controversy. That letter in Bengali can be found in Tagore's biography Ravindrajivani, volume II page 339 by Prabhatkumar Mukherjee.

"A certain high official in His Majesty's service, who was also my friend, had requested that I write a song of felicitation towards the Emperor. The request simply amazed me. It caused a great stir in my heart. In response to that great mental turmoil, I pronounced the victory in Jana Gana Mana of that Bhagya Vidhata [ed. God of Destiny] of India who has from age after age held steadfast the reins of India's chariot through rise and fall, through the straight path and the curved. That Lord of Destiny, that Reader of the Collective Mind of India, that Perennial Guide, could never be George V, George VI, or any other George. Even my official friend understood this about the song. After all, even if his admiration for the crown was excessive, he was not lacking in simple common sense."

Again in his letter of 19 March 1939 Tagore writes,

"I should only insult myself if I cared to answer those who consider me capable of such unbounded stupidity as to sing in praise of George the Fourth or George the Fifth as the Eternal Charioteer leading the pilgrims on their journey through countless ages of the timeless history of mankind." (Purvasa, Phalgun, 1354, p738'"

Note:It must be noted that Guru Dev wrote the song 26 years earlier when he was being considered for Noble Prize and freedom struggle was yet to take off.